Chapter 1 Installing and Configuring the SCXI-1127/1128
SCXI-1127/1128 User Manual 1-14 ni.com
1. Install the HVAB-backplane adapters and jumper blocks in the 12-slot
chassis as described in steps 1 through 3 in Single 12-Slot Chassis
Configuration.
2. Connect the HV8-HV8 cable from the first chassis, normally the
connector behind slot 1, to the HVAB connector (behind slot 12) of the
next chassis.
3. Connect the SH9MD-9MD cable from the AUX OUT connector of the
first chassis to the AUX IN connector (behind slot 5) of the next
chassis.
4. Repeat steps 1 through 3 for each additional chassis.
Notes Do not use the SH9MD-9MD cable behind slot 4 of the 2-slot HVAB-backplane
adapter on the 12-slot chassis.
An SCXI-1127/1128 is required in slot 4 of the 4-slot chassis and slot 12 of the 12-slot
chassis to establish communications with all the chassis in the system. If slot 4 is empty
in the 4-slot chassis or slot 12 is empty in the 12-slot chassis, the chassis will not operate.
It is this module that you must specify in MAX as the module cabled to the DMM.
If the 4-slot chassis is configured with less than four slots of the HVAB-backplane adapter,
use the right-most available HVAB connector to extend to the next chassis. In this instance,
right-most means the slot closest to slot 1 when the chassis is viewed from the back.
12-Slot and 12-Slot Multichassis Configuration
In addition to the items needed for a single-chassis system, you need the
following items to install this configuration:
•SCXI-1358 multichassis expansion kit
–HV8-HV8 cable
–SH9MD-9MD cable
–Three 8-position HVAB plugs
–One 8-slot HVAB-backplane adapter
–One 2-slot HVAB-backplane adapter
–Two 1-slot HVAB-backplane adapters